Musical Tune Playback Apparatus

1. A musical tune playback apparatus comprising: a musical tune player for playing back at least one musical tune stored in a digital storage medium; a storage for storing musical tune data corresponding to the musical tune that is played back together with relative information; a musical tune data retriever for retrieving desired musical tune data related to the relative information, which substantially matches at least one retrieval condition; and a musical tune data reproducer for reproducing the retrieved musical tune data, wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches a user's emotional condition that is detected as the retrieval condition based on user's body temperature and pulse.

2. A musical tune playback apparatus according to claim 1 , wherein the musical tune data are transmitted from a musical tune data distribution apparatus via a communication line.

3. A musical tune playback apparatus according to claim 1 , wherein the relative information regarding the musical tune data is transmitted from a musical tune data distribution apparatus via a communication line.

4. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches a character string that is input as the retrieval condition.

5. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches a user's emotional condition that is used as the retrieval condition.

6. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches a time period or a season in which a user's name is input.

7. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches image data that are input as the retrieval condition.

8. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches image data that are selected from among a plurality of preset image data as the retrieval condition.

9. A musical tune playback apparatus according to claim 1 further comprising a display for displaying an image suiting the retrieved musical tune data.

10. A musical tune playback apparatus according to claim 1 , wherein the musical tune data retriever retrieves desired musical tune data related to the relative information, which substantially matches words information representing words of a song, which is recognized based on a user's utterance.